What is injection attack?

Answer 1

Injection attacks are a type of attack used by hackers on applications and web sites.

The injection attack involves "injecting" or forcefully inserting fragments or complete code. This is usually aimed at altering the normal path or execution of the flow of the operation. Injecting is usually done in places where user input is requested, and instead of entering standard inputs, the attacker inserts codes, thus leading to the name, injection attack.

These can be generalized separately as :-

1. SQL injection attacks
2. Code injection attacks